Suspension device for brake-blocks.



J. E. ANGER.

SUSPENSION DEVICE FOR BRAKE BLOCKS.

APPLICATION FILED JAN. 16, 1914.

1,]| @4|=,4%?, Patented Dec. 14, 1915.

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J. E. ANGER.

SUSPENSION DEVICE FOR BRAKE BLOCKS.

APPLICATION FILED JAN. 16. 1914.

1,21%,M7 Patented Dec.14,1915.

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SUSPENSION DEVICE FOR BRAKE BLOCKS.

APPLICATION FILED JAN.16. 1914'.

1,1 MAM. Patented Dec. 14, 1915.

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Specification of Letters Patent.

Application filed January 16, 1914. Serial No. 812,462.

T 0 all whom it may concern Be it knownthat I, JOHN EDWARD AN- GER, acitizen of the United States of America, residing at Preston, in thecounty of Lancaster, in the Kingdom of England, have invented certainnew and useful Improvements in Suspension Devices for Brake-13locks, ofwhich the following is a specification.

This invention has reference to hangers or suspension devices for brakeblocks or wearing shoes usedupon railway and tramway vehicles, and theobject of the invention is to provide certain improved means for takingup the wear of the bearings or pivoted connections of the hanger.

To this end my invention consists in the, novel construction,arrangement and combination of parts herein shown and described and moreparticularly pointed out in the claims.

In the accompanying drawings :Figure 1 is a side view of my device forhanging or suspending brake blocks; and Fig. 2, an end view thereofpartly in section. Figs. 3 and 4 are end views, partly in section,showing slightly modified forms of the in vention.

In the drawings, 1 is one of the brake shoe carriers attached at 2- tothe end of the usual brake beam, 3 the brake supporting bracket, and 4:the suspension links for suspending the carrier 1 from the bracket 3.The suspension links 4 of each brake block are hung from conical bushes7 on a steel pin 6, which latter is passed through a hole in the brakesupporting bracket 3. The pin 6 is preferably made square except at thetwo ends, and the holes through which this squared part passes, are madeof corresponding shape, so that the pin cannot revolve or becomedisplaced. The two ends of the squared part project at each side of thebracket 3, and mounted on each of these two projecting ends, is theconical wearing bush or follower 7. The suspension links 4 which arebored at their upper ends with corresponding conical holes, arejournaled or hung on these bushes 7 with the bracket 3 interveningbetween, and any pressure or pull on the links 4, forces such linksagainst the bracket 3. These cones 7 are so mounted on the square partof the pin 6, as to be free to move longitudinally, while beingprevented from rotary motion around the axis of the pin, due to thesquare shape of The two ends of the pin 6 are turned down to suitablesize and threaded to receive the nuts 8, one of which (or a head) abutsby means of a washer against one of.

the conical bushes, while the nut at the other end abuts by means of awasher against the other conical bush, or spring washers 9 can beintroduced under the nuts. Consequently the conical bushes 7 are held incontact with the conical holes in the. suspension links 1- so there isno looseness or play and yet the suspension links can swing freely;IVhen the conical holes in the links, or the conical bushes themselvesbecome worn, the nuts at the end of the bolt 6 are screwed up, thussliding the bushes 7 longitudinally so as to compensate for wear andprevent rattling. The bracket 3 is recessed at each side around the holeso as to provide clearance for the longitudinal movement of the conicalbushes, these recesses being shown at 10, and the nuts at the end ofthe. bolt are preferably provided with a ing means 11 of any suitablekind.

The invention also applies at the place Where the eyes at the lower endsof the suspension links, are journaled or coupled on to the brake shoecarrier 1, the pin 6 inthat case being passed through a square hole 1nthe carrier as shown. The arrangement is the same as that hereinbeforede-- scribed, similar reference numerals indicating l ke orcorresponding parts.

Patented Dec. 14, 1915.

nut lock- Instead of the conical bushes 5 being mounted on a solid steelpin 6, they can be mounted in a hollow steel pin 12 which is fixed, ifdesired, in position in the bracket 3 by means of a set screw 13 orotherwise, so that it cannot revolve or become displaced as shown inFig. 3. Through the hollow steel pin 12 is passed a pivot bolt 14, thehead 15 of which at one end abuts against one of the conical bushes 7,while a nut 16 at the other end abuts by means of a washer against theother conical bush 7. Another plan would be to make the solid pin 6 witha conical head 17 at one end, and a conical nut 18 at the other end onwhich the hangers 4 are journaled as shown in Fig. 4. v

I declare that what I claim is 1. In a suspension device for brakeblocks, the combination with the brake supporting bracket and brake shoecarrier and the suspension links, of pins passing through the saidbrackets and carrlers and conlcal wearing bushes carried by the saidpins and recessed into the suspension links from the outside to suspendthe carrier from the bracket, the smaller ends of the conical bushespointing toward but not touching the bracket and carrier.

2. In a suspension device for brake blocks, the combination with thebrake supporting bracket or brake shoe carrier, of a non-rotary pin orbolt passed through the holes therein, conical replaceable bushesrecessed into the suspension links from the outside, and so mounted onthe projecting ends of such pin or bolt as to be free to be adjustedaxially, while being prevented from rotary motion around the axis of thepin, the head of the nut at one end of the pin abutting against oneconical bush, and a nut at the other end of the pin bearing by means ofa washer against the other conical bush.

3. In a suspension device for brake blocks, a brake supporting bracketand brake shoe carrier, a non-rotating pin or bolt passed through a-holein the bracket or carrier, a pair of suspension links, one on each sideof the bracket and carrier, conical replaceable bushes or followersmounted on the projecting ends of such bolts, so as to be free to beadjusted axially and recessed into the conical holes'in the links fromthe outside, said bushes having an axial movement only and beingprevented from rotating so that the links swing on the bushes.

4. In a suspension device for brake blocks,

.t brake supporting bracket and brake shoe carrier, a non-rotatlng pinpassing through a hole in the bracket, a pair of suspension links, oneon each side of the bracket and carrier, conical bushings mounted on theprojecting ends of said pins, so as to be free to be adjusted axiallyand recessed into the conical holes from the outside, said bushinghaving an axial movement and being prevented from rotating on the pinsso that the links swing on the bushings.

5. In a suspension device for brake blocks, a brake supporting bracketand brake shoe carrier, a pin passing through the said bracket andcarrier, so that it cannot rotate, a pair of suspension links, one oneach side of the bracket and carrier, conical wearing bushings mountedon the pins against rotation and recessed from the outside into theconical holes in the links, and means for locking the bushings on thepins within the suspension links.

6. In a suspension device for brake shoes, a brake supporting bracketand brake shoe carrier, bolts passing through the said bracket andcarrier, conical wearing bushings carried by thebolts and held againstrotation thereon, a pair of suspension links, one on each side of thebracket and carrierand having tapered sockets or holes receiving theconical bushings the smaller ends of which point toward the bracket andcarrier, and means for forcing the conical bushings into the taperedsockets in the links from the outside, whereby the links swing on thebushings and by the arrangement of the bushings the normal tendency ofthe links is to move inwardly to prevent spreading of the links.

In witness whereof, I have hereunto signed my name this 7th day ofJanuary 1914, in the presence of two subscribing witnesses.

JOHN EDWARD ANGER.

Witnesses WM. PIERCE, W. WATSON.

Copies of this patent may be obtained for 'five cents each, byaddressing the Commissioner of Patents, 'Washington, D. C.

